import axios from 'axios'
import { Message, MessageBox } from 'element-ui'
import store from '@/store'
import { getToken, removeToken } from '@/utils/auth'

// create an axios instance
const service = axios.create({
  baseURL: process.env.BASE_API, // api的base_url
  timeout: 1000 * 20, // request timeout
  transformRequest: [function (data) {
    let ret = ''
    for (let it in data) {
      ret += encodeURIComponent(it) + '=' + encodeURIComponent(data[it]) + '&'
    }
    return ret
  }],
  headers: { 'Content-Type': 'application/x-www-form-urlencoded' }
})

// request interceptor
service.interceptors.request.use(config => {
  // Do something before request is sent
  if (store.getters.token || getToken()) {
    config.headers.Authorization = getToken()
    config.headers['Admin-Token'] = getToken() // 让每个请求携带token-- ['Admin-Token']为自定义key 请根据实际情况自行修改
  }
  return config
}, error => {
  // Do something with request error
  console.log(error) // for debug
  Promise.reject(error)
})

// respone interceptor
service.interceptors.response.use(
  response => {
    const res = response.data
    if (res.status === 501) {
      MessageBox.alert('系统未登录，请重新登录', '未登录', {
        confirmButtonText: '确定',
        type: 'error'
      }).then(() => {
        store.dispatch('FedLogOut').then(() => {
          location.reload()
        })
      })
      return Promise.reject('error')
    } else if (res.status === 502) {
      MessageBox.alert('系统内部错误，请联系管理员维护', '错误', {
        confirmButtonText: '确定',
        type: 'error'
      })
      return Promise.reject('error')
    } else if (res.status === 503) {
      MessageBox.alert('请求业务目前未支持', '警告', {
        confirmButtonText: '确定',
        type: 'error'
      })
      return Promise.reject('error')
    } else if (res.status == 101) {
      Message({ type: 'error', message: res.msg })
      return Promise.reject(res)
    } else if (res.status == 102) {//登陆失效
      store.dispatch('LogOut').then(() => {
        location.reload()// In order to re-instantiate the vue-router object to avoid bugs
        this.$router.push("/login")//后加的
      })
      Message({ type: 'error', message: res.msg })
      return Promise.reject(res)
    } else if (res.status !== 100) {
      // 非5xx的错误属于业务错误，留给具体页面处理
      return Promise.reject(response)
    } else {
      return response
    }
  }, error => {
    console.log('err' + error)// for debug
    Message({
      message: '登录连接超时（后台不能连接，请联系系统管理员）',
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  })

  export default service

// // 輸出方法
// export default function fetchApi(options) {
//   return new Promise((resolve, reject) => {
//     service({
//       url: options.url,
//       method: options.method,
//       data: options.data
//     })
//       .then(res => {
//         resolve(res)
//       })
//       .catch(error => {
//         reject()
//         console.log(error)
//       })
//   })
// }
